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What relation is your daughter's sister's grandfather's son to you ?

What relation is your mother's sister's brother in law's cousin's daughter to you ?

What relation is your sister's father's son's uncle to you ?

What relation is your brother's cousin's sister's mother's nephew's grandfather to you ?

What relation is your father's mother's grandson's sister's brother to you ?

What relation is your sister's aunt's son's brother's father's daughter to you ?